http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Problems and solutions on solid state physics, relativity and miscellaneous topics
ΣΤΕΡΕΑ ΣΩΜΑΤΑ (ΦΥΣΙΚΗ) - ΠΡΟΒΛΗΜΑΤΑ ΚΑΙ ΑΣΚΗΣΕΙΣ
Major American Universities Ph. D. Qualifying questions and solutions